Sanyo Battery by Amstron is designed for use with Sanyo SCP-2400/ SCP-3100/ SCP-7000 cell phone model. Amstron cell phone batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility, and safety to exceed original equipment manufacturer specifications. • Chemistry: Li-Ion • Ratings 3.7 Volts 850mAh Capacity • Warranty: 4 Years